1.0.4: Minor Python 3 bugfix. 1.0.3: Attempt to make code compatible with Python 3. 1.0.2: Removed extraneous code (had switched from callbacks for solutions to making solve a generator to yield, but had forgotten to remove the solution callback function parameter from the solve method). 1.0.1: Critical bugfix (N array was one short: did not account for header). 1.0.0: Initial release.